vtec help

[eg5sir]

hey guys

I installed a b16a off a jdm sir into my eg5. Since then I've not had any vtec. I was told it was code 18 for the vtec solenoid. I changed it over but still no joy. I do want to mention that when i did swap the solenoid over I think that something did drop out, but have changed with 2 different solenoids and still nohing. also hav resistance checked both connector and solenoid and boh seem to be doing sumthing?

Is there anything else that could be restricting the vtec?

All help will be greately appreciated

Cheers

[ECU-MAN]

how did you wire it all up, or did you just connect ang go ?

[VTec1987]

you need to wire up vtec from the shock tower to the ecu

[eg5sir]

I just plugged and played. Do i need to wire up vtec? how would i do that (simple instructions please as im a noob lol)? the loom i used already has vtec so i believed that it shud have just connected and worked or ws i being too naive?

thanks for the responses

[VTec1987]

well yes ur engine loom has vtec, but the car is not vtec
so if you check ur ecu plugs, there is no vtec wire going to the ecu.

http://www.ff-squad.com/tech/wiring/obd1.shocktowerplug.jpg

http://b16a2.kicks-ass.net/diy/pgmfi/ecu/PGMFI-pins1-2.jpg

You will need to wire up the following to get it run properly
Vtec: A4
Vtec Pressure: C6
4 wire 02 sensor
knock sensor (depends on the ecu)

[VTec1987]

where u located?
u got eg5 si or vti?

[eg5sir]

Im located in the UK - lol - so please dont stop helping because im a pomme - hehe. The car is a uk eg5 Esi SOHC vtec (D16z6). Im now trying to decipher that diagram - lol

[VTec1987]

if its sohc vtec then u would have vtec and vtec pressure already in the shock tower
I just read ur first post again, code 18?
Are you sure?
vtec is code 21

[eg5sir]

sorry yes its code 21 - sorry i forgot which it was!

[VTec1987]

well you gotta check the vtec plug and vtec ecu pinout for short circuit

[VTec1987]

put 12v signal from the battery to the vtec solenoid and listen carefully, you should hear a click, if you don't then its goneskies

[Int3gra-T]

UKhonda

[eg5sir]

yep

will try this today but i think it works tbh

[ECU-MAN]

check for continuity from OBDI A4 to the VTEC solenoid wire ( with The soldenoid unplugged )

follow this link

http://www.ozhonda.com/forum/showthread.php?t=68997

[eg5sir]

Thanks ECU-MAN for that really helpful link - will try this tomoro.

Just thought i'd ask that I've got a problem with the code 10 IAT - would this cause it to not vtec as the diagnostic write-up suggests that the enigine may be in 'limp mode'?

[ECU-MAN]

its possible.

I have found many ecus behave differantly to faults from different sensors.

but IAT is one that can cause no VTEC when in limp. also is you VSS working ?

[eg5sir]

Thanks guys - got these little problems fixed, no longer have the engine management light on when driving normally, but still no vtec?

The light came back on when at high revs, and the ecu threw up code 23 (knock sensor). Could this be the reason?

[ECU-MAN]

do you have one ?, is it connected ?

follow this link for compleate PGMFI diagnostics and repair

http://www.ozhonda.com/forum/showthread.php?t=67113


click on the code word for link to diagnostics

[eg5sir]

the engine is a b16a removed from a jap import del sol sir. yes i do have one and its connected!

any thoughts?

[ECU-MAN]

http://www.ozhonda.com/forum/showthread.php?t=69306

do the tests